b43: read correct register on bcma bus.

This causes an databus error on a Broadcom SoC using bcma.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c
index 83cba22ac6e88d6c6bddeecc1d65815b62db5f3f..481e534534eb3a437a732509c80bba6db73ff2e1 100644 (file)
--- a/drivers/net/wireless/b43/dma.c
+++ b/drivers/net/wireless/b43/dma.c
@@ -795,9 +795,23 @@ static u64 supported_dma_mask(struct b43_wldev *dev)
        u32 tmp;
        u16 mmio_base;
 
-       tmp = b43_read32(dev, SSB_TMSHIGH);
-       if (tmp & SSB_TMSHIGH_DMA64)
-               return DMA_BIT_MASK(64);
+       switch (dev->dev->bus_type) {
+#ifdef CONFIG_B43_BCMA
+       case B43_BUS_BCMA:
+               tmp = bcma_aread32(dev->dev->bdev, BCMA_IOST);
+               if (tmp & BCMA_IOST_DMA64)
+                       return DMA_BIT_MASK(64);
+               break;
+#endif
+#ifdef CONFIG_B43_SSB
+       case B43_BUS_SSB:
+               tmp = ssb_read32(dev->dev->sdev, SSB_TMSHIGH);
+               if (tmp & SSB_TMSHIGH_DMA64)
+                       return DMA_BIT_MASK(64);
+               break;
+#endif
+       }
+
        mmio_base = b43_dmacontroller_base(0, 0);
        b43_write32(dev, mmio_base + B43_DMA32_TXCTL, B43_DMA32_TXADDREXT_MASK);
        tmp = b43_read32(dev, mmio_base + B43_DMA32_TXCTL);